[Stats]

Hi All,

Just wondering if this can be done without changing to a 520 chain (Mechanic reckons i got 75% life left in stock chain) but i want some more mid range power for track racing (The track i ride at is small with sharp corners - front straight is around 500 meters long)

I haven't changed the sprockets before either - Is it hard to change out with out taking the whole chain off? Any guides?

Appreciate the advice in advance

 

[franknguyen]

Very simple, just buy 525 size sprocket.

 

[TurboBlew]

Super easy... an impact with the correct socket will make quick work of it.
A friend to hold the rear brake might help.

 

[Stats]

Super easy... an impact with the correct socket will make quick work of it.
A friend to hold the rear brake might help.

Can you just wrap the chain around the new sprocket or do you have to loosen the chain at the back and sleeve it over the sprocket?

 

[TurboBlew]

dont loosen anything til you pop the nut off the countershaft. (youll have to remove the gear linkage & cover) Have a friend step on the rear brake while doing so. Once you get it loose... then give yourself some slack with the axle adjusters. Put the new sprocket on then hand tighten the nut. Align the axle/chain then hit the nut with the impact (again holding the rear brake). Put the cover & linkage back on. The bike will be easier to ride at pedestrian speeds.